[Summary] DAT tape unit

From: Oyanarte Portilho <portilho_at_fis.unb.br>
Date: Wed, 09 Jun 1999 18:42:14 -0300

Hi Gurus,

Sorry for the late summary. Many thanks to the experts who
have responded:

Roger Leonard
Robert Mulley
Oisin McGuinness
Dr. Tom Blinn
Sean O'Connell
Bryan Lavelle
Pete Simpson
Bart Rousseau
Calvin Chung
Alan Rollow
Nigel Gall

The solution is simple in principle. Go to /dev and use the
command

        ./MEKEDEV tz#

to generate the drives. But it was not so simple to find out what is the
right tz number. In principle I should dig /var/adm/messages or try

        uerf -r 300|more

and find out what tz number clears during boot. I have found:

Jun 21 00:41:50 XXXXXXX vmunix: tz5 at scsi0 bus 0 target 5 lun 0
     (DEC TLZ07 (C)DEC 4BE0)

So it looked like tz5 but it did not work! There is a prescription to
find the number and it is the following;

        number = (bus * 8) + target-id

As a matter of fact, with the sequence of commands

        # scu scan edt
        # scu show edt

I could have a clue that bus 0, target 6, refers to

            Bus: 0, Target: 6, Lun: 0, Device Type: Sequential Access

But anyway I guessed by taking my chance, guided by the scsi address
in the back of the unit (just a coincidence?), that it could be 6; in
effect

        ./MEKEDEV tz6

generated *rmt* drivers that are working in harmony with my tape drive!

Cheers/beers from South America,

        Oyanarte Portilho
        Institute of Physics
        University of Brasilia, Brazil


-----

Original posting:

We have a external DAT tape unit (4 mm, model TLZ07-DA) that used
to hold 8 Gb with high density, hooked on a Alpha Station 400-4/233
running DU V3.2D-1. About a year ago the unit stopped working -
it looks like it is not recognized any more since mt status gives

/dev/nrmt0h: No such file or directory

In effect, there is no rmt driver in /dev. Could anyone tell
me how to reinstall this unit?
Received on Wed Jun 09 1999 - 21:44:02 NZST

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